http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
alternative regionalization scheme for defining nutrient criteria for rivers and streams
v, 57 pages : color illustrations, color maps ; 28 cm.
by Dale M. Robertson, David A. Saad, and Ann M. Wieben ; prepared in cooperation with the U.S. Environmental Protection Agency, Regions 5 and 7.
Includes bibliographical references (pages 35-36).
Water-resources investigations report ; 01-4073